Erawan weather in January

In January, Erawan sees average daytime highs of 29°C and overnight lows near 17°C, with 8 mm of rain across 1.6 wet days and about 11.1 hours of daylight. It is the 11th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 62% of the time in January, and the air most often feels humid.

Daylight stretches from about 11 hours at the start of January to 11 h 12 min by month's end. Set against the rest of the year, January is Erawan's 2nd-clearest and 4th-windiest month. For the whole year in context, see Erawan's year-round climate.

Daytime high
29°
11th warmest
Overnight low
17°
1st coldest
Rainfall
8 mm
1.6 wet days
Daylight
11 h 06 min
6:49 AM – 5:54 PM
Cloud cover
35%
2nd clearest
Wind
6 km/h
4th windiest
Solar energy
4.73 kWh/m²
Travel score
7.0
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical January day in Erawan reaches about 29°C in the afternoon and slips back to 17°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 32°C. Set against its neighbours, January runs about 1°C warmer than December and about 3°C cooler than February.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12816
22816
32816
42816
52816
62817
72817
82817
92917
102917
112917
122917
132917
142917
152917
162917
172917
182917
192917
202917
212917
222917
232917
242917
252917
262917
272917
282917
293017
303017
313017

How January really feels in Erawan

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Erawan weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 17°81.611.17.0
Feb31° / 18°112.111.45.4
Mar34° / 22°366.711.93.5
Apr35° / 24°6611.412.42.5
May34° / 25°16721.312.82.3
Jun33° / 25°14519.1132.5
Jul32° / 25°16620.312.92.7
Aug31° / 25°23323.512.62.7
Sep31° / 24°24023.812.12.9
Oct30° / 23°11513.511.64.5
Nov29° / 20°223.211.26.4
Dec28° / 17°81.2117.8

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 62% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 23%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17525
27525
37525
47426
57327
67327
77327
87327
97327
107327
117426
127426
137426
147525
157525
167723
177723
187822
197822
207921
217921
228020
238020
248119
258119
268119
278119
288119
298218
308218
318218

Chance of precipitation in January

Any precipitation

Erawan gets around 8 mm of rain over 1.6 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 5% and peaks near 6% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
15
25
35
45
55
65
75
85
95
105
115
125
135
145
155
165
175
185
195
205
215
225
235
246
256
266
276
286
296
306
316

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the humid band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 22% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1162835202
2162835202
3152836202
4142836192
5142837192
6142837192
7142838192
8142738192
9142738192
10142738192
11142738192
12142738182
13142738182
14142838182
15132838182
16132838182
17132838183
18132838183
19132938183
20122938183
21122937193
22122937193
23122937193
24122937203
25122836203
26122836214
27122836214
28132736214
29132735214
30132635214
31142635214

Wind in January

Winds average 6 km/h in January.

Across January, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 hours at the start of January to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over January. Sunrise moves from 6:46 AM to 6:49 AM, and sunset from 5:45 PM to 6:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:465:45
211.06:465:45
311.06:475:46
411.06:475:47
511.06:475:47
611.06:475:48
711.06:485:48
811.06:485:49
911.06:485:49
1011.06:485:50
1111.06:495:51
1211.06:495:51
1311.06:495:52
1411.16:495:52
1511.16:495:53
1611.16:495:54
1711.16:495:54
1811.16:505:55
1911.16:505:55
2011.16:505:56
2111.16:505:57
2211.16:505:57
2311.16:505:58
2411.16:505:58
2511.26:505:59
2611.26:505:59
2711.26:496:00
2811.26:496:01
2911.26:496:01
3011.26:496:02
3111.26:496:02

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.73 kWh/m².

For context, solar energy here swings from a low near 4.23 kWh/m² to a high of 5.99 kWh/m² in April across the year — January's 4.73 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in January

Hazard calendar for Erawan

In seasonPeak

None of Erawan's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Erawan's monsoon runs May–October, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Erawan?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.0
Sightseeing
2nd-best month of the year
8.7
Beach & pool
1st-best month of the year

January is one of the better times to visit Erawan for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Erawan in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Erawan sees daytime highs around 29°C and nights near 17°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Erawan in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Erawan peaks around August 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 11UV 13Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb10Extreme
Mar12Extreme
Apr11Extreme
May11Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Erawan in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Erawan is worst in March — around 63 µg/m³ PM2.5 (unhealthy), about 3.1× the cleanest month (July, 20 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModerateMar 1861 µg/m³Jul 1320 µg/m³
PM2.5 (µg/m³)Level
Jan31Moderate
Feb45Poor
Mar63Unhealthy
Apr50Poor
May28Moderate
Jun20Moderate
Jul20Moderate
Aug21Moderate
Sep23Moderate
Oct25Moderate
Nov24Moderate
Dec25Moderate
Location & terrain

Where is Erawan?

Erawan sits at 17.3°N, 102.0°E, 358 m above sea level, in Thailand. The nearest listed city is Wang Saphung, 20 km away.

Topography around Erawan

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Erawan.

Within 3 km, the terrain around Erawan has only modest variations in elevation — a maximum elevation change of 147 m around an average of 358 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 410 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,433 m.

The land around Erawan is covered by trees (51%) and cropland (36%) within 3 km, cropland (52%) and trees (41%) within 16 km, and trees (59%) and cropland (35%) within 80 km.

3 km
147 m
16 km
410 m
80 km
1,433 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Wang Saphung 20 km · Na Klang 25 km · Loei 32 km · Phu Kradueng 47 km · Nong Bua Lamphu 53 km · Nam Som 58 km · Kut Chap 67 km · Chum Phae 86 km

Thailand travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C
230 V · 50 Hz
Prices
≈ 31% of US
price level, 2025
GDP per capita
$8,057
2025
Happiness
6.3 / 10
World Happiness, 2025
Homicide rate
4.8
per 100k, 2011
Road deaths
32.2
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 402
Religion
Buddhist 93%Muslim 5%Christian 1%other 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Erawan (17.3018°, 101.9538°, elevation 358 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).